[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Core memory

> > Why doesn't the magnetic field in the ferrite core degrade? (I assume the
> > ferrite has some resistance.)
>Have you ever known other magnets to degrade?  Once magnetized, a
>material won't demagnetize unless exposed to heat above its Curie point
>or another sufficiently strong magnetic field.

Oh, now I understand, you create a permanent magnetic field just like
magnetic discs and tapes. (I though you created a current in the core) So in
fact the cores don't need to be closed completely.